Incinerator screen and settling chamber



Sept. 5, 1939. J. B. KING ET AL INCINERATOR SCREEN AND SETTLING CHAMBER Filed July 28, 1938 2 Sheets-Sheet 1 mm E y Sept. 5, 1939. J. B. KING rrr AL 2,171,798

INGINERATOR SCREEN AND SETTLING CHAMBER Filed July 28, 1938 2 Sheets-Sheet 2 gimme/MW JOSEPH B. Kme, RQBERTWKING,

Patented Sept. 5, 1939 UNITED STATES PATENT oFFics INCINERATOR SCREEN AND SETTLING CHAMBER This invention relates to apparatus designed to be employed in connection with chimneys to prevent the discharge of fly ash and other particles therefrom.

Where chimneys or stacks are connected to incinerators, paper and similar substances burned in the incinerator frequently produce a resultant formation of light, fiakelike particles known as fly ash. These particles are carried upwardly by the chimney draft and, after being discharged from the chimney, settle on surrounding objects which is, of course, objectionable.

Efforts which have been made in the past to prevent this objectionable discharge by the use of a screen over the top of the chimney have not been satisfactory due to the difficulty of access of such a screen, particularly in cases where it has been necessary to have the stack or chimney project for a considerable distance above the roof of the building.

Indeed, in many instances, where the roof of the building is used for dining or recreation pur poses, it is necessary to use a supplementary stack to carry the smoke away from the patrons. These supplementary stacks, of necessity, rise to such heights as to render the outlet or top screen impractical.

It is an object, therefore, of the present invention to provide a screen and settling chamber installation which is so arranged that the screen is readily accessible for cleaning and which may be installed with any standard chimney or stack at any point above that at which the incinerator discharges into the same.

It is a further object of this invention to provide such a screen and settling chamber so arranged in reference to the chimney or stack as to permit the ready removal of the ash and similar material accumulated therein.

It is another object of this invention to provide a screen and settling chamber installation which is neat in appearance, simple and inexpensive in construction, and which requires no auxiliary stack for its satisfactory operation.

Other and further important objects of this invention will be apparent from the disclosures of the accompanying drawings and in the specification hereinafter set forth.

The invention (in a preferred form) is illustrated on the drawings and hereinafter more fully described.

On the drawings:

Figure l is a side elevational view, partly in section, showing the exterior of one installation embodying the principles of this invention.

Figure 2 is an enlarged section on the line IIII of Figure 1.

Figure 3 is an enlarged fragmentary section on the line IIIIII of Figure 2.

Figure 4 is an enlarged fragmentary View on the line IIIII of Figure 2 and showing a modification of the baflle of Figure 3.

As shown on the drawings:

Figure 1 schematically illustrates one method of installation of the improved incinerator screen and settling chamber of this invention. In this figure the reference numeral I indicates the wall of a building in which is installed ausual incinerator 2 which may be employed in the burning of waste, rubbish and other material accumulated by the building occupants.

Draft for the incinerator 2 is provided by the usual chimney or stack 3 which extends above the roof of the building and which is provided with the usual longitudinal passage 4 therethrough. Floor sections at various levels of the height of the building are designated by the reference numerals 5.

In the drawings we have chosen to show an embodiment of our invention positioned above the roof of the building since this is ordinarily a convenient location, but it is to be understood that the apparatus of our invention may operate satisfactorily if connected to the chimney or stack 3 at any point above the point at which the incinerator discharges products of comb-usion thereinto.

Our improved screen and settling chamber embodies a housing which may be constructed from any suitable fireproof material, such, for example, as sheet metal, fireproof composition board, or the like, and which is designated generally in Figure 1 by the reference numeral 6. Said housing 6 embodies a roof or top wall portion 6a, side walls 61), an end wall and a floor or bottom portion 6d. These wall portions are assembled and held together by any suitable framing means, such for example as angle irons. It will be noted that said housing 6 is provided with only one end wall so that is has one open end which in the accompanying drawings is shown at the lefthand side of the housing. The open end of the housing communicates with a lateral opening into the longitudinal passage 4 through the chimney 3, a

baffle I being provided to close off the longitudinal r passage so that the top portion of the housing communicates with the longitudinal passage through the chimney or stack above said baffie 7 while the bottom portion of the housing communicates with said longitudinal passage below the baiile portion 1.

In order to assure a somewhat longer path of flow of the gaseous products of combustion through the housing 6, a supplemental baflle means 8 is preferably provided which extends from the top portion of the baffle 1 laterally into the housing intermediate the top and bottom portions thereof and to a point spaced from the end wall 60. By virtue of this arrangement, a tortuous path is provided for the flow of gaseous products of combustion through the housing 6 in the direction and in the general path indicated by the arrows shown in Figure 3.

The front wall 6b of the housing 6 is provided with a vertical slot extending from the floor 6d of the housing up to the end of the supplemental bafile 3 to provide for the insertion of a screen 9 therein, said screen 9 having a suitable framing slidable in guideways l and II formed respectively on the under side of the end of the supplemental baille 8 and on the upper side of the floor 6d of the housing.

The screen 9 is provided at one end with a frame portion l2 which supports the screen wire and which also affords a mounting for an external handle 13 which enables the screen to be inserted into or removed from its operative position entirely from the exterior of the housing.

It will be noted from the foregoing that the screen i is interposed in the path of the products of combustion as the same traverse the housing in the manner indicated by the arrows in Figure 3. As a result of this construction, fiy ash and similar solid particles will be removed from the products of combustion traveling upwardly through the chimney by said screen 9 and will be deposited on the floor 5d of the housing 6 in that portion of the housing adjacent the lower end of the lateral opening therein.

To facilitate the cleaning of that portion of the housing in which the fly ash and similar substance has been deposited aiter removal by the screen 8, we have provided a door M which affords access to the interior of the housing and particularly to the chamber in which the fly ash and similar material has been collected.

It should be noted that the floor Ed of the housing is flush with the lateral opening into the chimney so that fly ash and similar waste material may either be removed through the door M or, desired, may be wetted and pushed back into the chimney opening to fall downwardly into the incinerator 2 where it may be disposed of with other content when the same is taken from the incinerator.

Sirniiarly, access is provided to that portion of the housing above the supplemental baflie means by means of a door l5 which makes it possible to clean the top portion of the housing and also to clean the top of the 'bafile and the top of the supplemental bafile means 8 if such procedure should be required.

The provision or" the removable screen 9 makes it possible to readily remove said screen for cleaning and also makes it possible to readily install screens of diiierent mesh as conditions may require.

The relative position of the baffle T and the supplemental bafrle means 8 with reference to the height of the lateral opening into the passage 4 may be varied depending upon draft conditions and the like.

It should be noted that the apparatus of this invention requires no supplementary or auxiliary stack whatever. This makes it possible to install such apparatus at any height desired without the inconvenience and expense of cutting through floor and roof sections to permit extension of an auxiliary stack. At the same time if it is desired to use an auxiliary stack on the exterior of the building to carry smoke further away from occupants of the roof of the building, that may be readily done since the removal of fly ash and similar particles by the apparatus of our invention makes it unnecessary that the extension stack be provided with a screen.

It will be apparent from the foregoing that our invention provides simple and eifcctive apparatus for the screening of fly ash and similar particles. This apparatus is inexpensive in construction, neat in appearance, and the accessibility of the interior thereof coupled with the ease of removal and insertion of the screen permits of maintenance of the apparatus with a minimum of effort.

As shown in Figure 4, the baffle 1 may be a plate or slab suitably supported about its marginal portion by being entered in a recess formed in the wall of the stack, as indicated at H, or by other means, and having an end removably secured to the supplemental baiiie 3 by bolts IE, or the like, to form an extension of the bafile ii.

We are aware that numerous details of construction may be varied through a wide range without departing from the principles of this invention, and we therefore do not purpose limiting the patent granted hereon, otherwise than necessitated by the claims.

We claim as our invention:

1. An incinerator separator adapted for use with a chimney having an upper and a lower lateral opening, respectively, separated by a baflle disposed in the chimney, said separator comprising a housing defining a box-like chamber and having a bafiie extending in the housing to define with said housing a conduit having an inlet for registration with the lower chimney opening and having an outlet for registration with the upper chimney opening, means on said horizontal bafile and on a spaced opposed bottom wall of said housing defining spaced opposed guideways, a side wallof said housing having means defining a slot, and a screen transversely slidable in said guideways and in the slot, and disposed between said inlet and said outlet to intercept fly ash.

2. An incinerator separator adapted for use with a chimney having an upper and a lower lateral opening, respectively, separated by a bafile disposed in the chimney and with the lower lateral opening being of substantially greater area than the upper opening, said separator comprising a housing defining a box-like chamber having top, bottom, and side walls, respectively, and having a baffle extending in the housing to define with said housing a conduit having an inlet for registration with the lower chimney cpening and having an outlet for registration with the upper chimney opening, a screen extending between said baffle and said bottom wall, said baiiie being disposed in said chamber to define with the walls thereof an inlet conduit having a bore substantially greater than the bore of the outlet conduit.

JOSEPH B. KING. ROBERT W. KING. 

